Analyze the following chemical combinations a) MgO b)CaCl2 c) Na2O

Write a double replacement precipitation reaction A precipitate forms when aqueous solutions of nickel(II) chloride and silver(I

harkovskaia [24]

Answer: The balanced chemical equation is written below.

Explanation:

Double displacement reaction is defined as the reaction in which exchange of ions takes place.

$AB+CD\rightarrow CB+AD$

Precipitation reaction is defined as the reaction in which an insoluble salt is formed when two solutions are mixed containing soluble substances. The insoluble salt settles down at the bottom of the reaction mixture.

When nickel (II) chloride reacts with silver (I) nitrate, it leads to the formation of white precipitate of silver chloride and an aqueous solution of nickel (II) nitrate.

The balanced chemical equation for the above reaction follows:

$NiCl_2(aq.)+2AgNO_3(aq.)\rightarrow 2AgCl(s)+Ni(NO_3)_2(aq.)$

By Stoichiometry of the reaction:

1 mole of aqueous solution of nickel (II) chloride reacts with 2 moles of aqueous solution of silver (I) nitrate to produce 2 moles of solid silver chloride and 1 moles of aqueous solution of nickel (II) nitrate

Hence, the balanced chemical equation is written above.

3 0

3 years ago

Sodium metal and water react to create sodium hydrogen and hydrogen gas through the unbalanced equation.

Maurinko [17]

Answer:

Theoretical yield = 2.5 g

Explanation:

Given data:

Mass of sodium = 79.7 g

Mass of water = 45.3 g

Theoretical yield of hydrogen gas = ?

Solution:

Chemical equation:

2Na + 2H₂O → 2NaOH + H₂

Number of moles of sodium:

Number of moles = mass/ molar mass

Number of moles = 79.7 g / 23 g/mol

Number of moles = 3.5 mol

Number of moles of water:

Number of moles = mass/ molar mass

Number of moles = 45.3 g / 18g/mol

Number of moles = 2.5 mol

Now we will compare the moles of hydrogen gas with water and sodium.

H₂O : H₂

2 : 1

2.5 : 1/2×2.5 =1.25 mol

Na : H₂

2 : 1

3.5 : 1/2×3.5 =1.75 mol

water will be limiting reactant.

Theoretical yield:

Mass = number of moles × molar mass

Mass = 1.25 mol × 2 g/mol

Mass = 2.5 g

8 0

3 years ago

Natural atom of the same element may have the same _________?

Minchanka [31]

Answer:B

Explanation:

4 0

3 years ago

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What is the rate of change in velocity

luda_lava [24]

The rate of change in velocity is called acceleration.

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3 years ago

What is The cellular process that releases the energy stored in food molecules

notka56 [123]

Respiration. That is the process.

7 0

3 years ago

Analyze the following chemical combinationsa) MgOb)CaCl2c) Na2O​

Analyze the following chemical combinationsa) MgOb)CaCl2c) Na2O